43results about How to "Sufficient insulation distance" patented technology

A plug receptacle includes a housing having at least one outlet unit to which a plug is adapted to be connected to supply a DC power to the plug, and a cable, connected to the housing, for supplying the DC power to the housing. The outlet unit includes a plug-receiving portion having a plurality of substantially circular pin-inserting holes into which plug pins of the plug are inserted and an insertion groove formed to surround a periphery of the plug-receiving portion. The plug-receiving portion has a substantially quadrangular shape viewed from a front side thereof. The insertion groove is adapted to receive a surrounding wall of the plug and has a substantially quadrangular shape viewed from the front side. The pin-receiving holes are arranged along one side of the plug-receiving portion serving as a reference side and offset closer to the reference side than an opposite side to the reference side.

A motor power distribution apparatus includes first insulating holders and second insulating holders. The first insulating holders are disposed to retain every other one of a plurality of stacked power distribution members that are unified by insert molding. The second insulating holders are disposed to retain power distribution members other than the power distribution members retained by the first insulating holders.

Disclosed is a vacuum circuit breaker. As a plurality of components of main circuit units are integrally formed as one module by molding using epoxy, the main circuit units are easily fabricated, and assembly errors are prevented. Since the main circuit units are arranged to be symmetrical to each other based on a driving unit, an insulation distance between a switchgear and the main circuit units can be obtained without increasing a size of the switchgear. This may allow the main circuit units to be easily arranged at the right side or at the left side according to an installation state of the switchgear.

To provide an electromagnetic relay having a reduced size, high conductivity, a high insulating performance between two fixed contact terminals and between each of the fixed contact terminals and backstop, a small number of factors causing a failure, and high reliability of electric contact.An electromagnetic relay has an electromagnetic block provided with a movable contact spring 14 swung by current flowing in a coil, two fixed contact terminals 22 and 22′ each having a fixed contact, a backstop 23 having two movable contact abutment portions, and a base block 2 for retaining the above components. The base block 2 has a base portion 20 having substantially a rectangular shape, fixed contact terminal retaining portions 21 and 21′ extending vertically from two opposing sides of the rectangle so as to retain the two fixed contact terminals, and a backstop retaining portion 24 extending vertically from the center portion of one of the remaining two opposing sides of the rectangle.

The invention relates to a cable terminal connecting device for a GIS and the GIS. The cable terminal connecting device for the GIS comprises a cylinder body, an end cap, a first insulator, a second insulator, and a moving contact. A cable terminal is arranged in the cylinder body, the cable terminal is conductively connected with a first static contact, and the cylinder body is provided with a first cylinder opening and a second cylinder opening; the end cap is fixedly arranged on the second cylinder opening and is used for plugging the second cylinder opening, and the end cap is dismounted during a withstand voltage test; the first insulator is fixedly arranged at the first cylinder opening, a second static contact is fixedly arranged on the inner side of the insert on the first insulator, and the second static contact is used for being conductively connected with the GIS body; the edge of the second insulator is fixedly arranged between the second cylinder opening and the end cap, and a contact seat is fixedly arranged on the inner side of an insert on the second insulator; and the moving contact is hinged on the contact seat, the moving contact has three working positions in the swinging process, the moving contact is conducted with the first static contact at the first working position, the moving contact is conducted with the first static contact and the second static contact at the second working position, and the moving contact is conducted with the second static contact at the third working position.

Disclosed is a complex protection device including a substrate, fuse terminals provided on the substrate, first resistive terminals provided on the substrate so as to be separated from the fuse terminals, second resistive terminals provided on the substrate opposite to the first resistive terminals across the fuse terminals, a fusible element connected to the fuse terminals, a first surface-mounted resistive element connected to the first resistive terminals, a second surface-mounted resistive element connected to the second resistive terminals, at least one printed resistive element connected to at least one of the first resistive terminals and the second resistive terminals and connected to at least one of the first surface-mounted resistive element and the second surface-mounted resistive element, and a switching element controlling flow of current to the first and second surface-mounted resistive elements and the at least one printed resistive element if overvoltage is applied.

A turn signal switch for a vehicle includes: a resiliently urging means provided between a switch operating element and a switch case so as to urge the switch operating element toward a neutral position and a returned position. The resiliently urging means includes: a return plate having a guide recess which is provided at one end and against which abuts a first pin provided on the switch operating element, the return plate being slidably supported on the switch case; a pair of return springs exhibiting spring forces for urging the return plate in a direction to bring the pin into abutment against the guide recess. The guide recess is curved into a substantially triangular shape, and includes a valley and return cam faces on opposite sides of the valley. The return springs are provided on opposite sides of the valley and between the return plate and the switch case. Thus, it is possible to reduce the length of the turn signal switch in the direction of push-in / return of the switch operating element.

The issue is to provide a small electromagnetic relay with superior conduction characteristics that has high insulating capacity between two fixed contact terminals and between the fixed contact terminals and the backstop, and, by having few malfunction-generating factors, exhibits highly reliable contact between contacts. The electromagnetic relay is configured with an electromagnet block provided with a movable contact spring (14) that rocks by means of current flowing to a coil, two fixed contact terminals (22) and (22') that have fixed contacts, a backstop (23) that has two movable contact touch parts, and a base block (2) that holds thecomponents. The base block (2) has fixed contact terminal holding parts (21) and (21'), the base part (20) of which has a rectangular shape, and that hold the fixed contact terminals at two opposing sides of the rectangular shape, and a backstop holding part (24) that holds the backstop (23) in the middle of one side between the two sides.

The invention discloses an anti-loose wire-clamping device used for a low-voltage electric appliance. The anti-loose wire-clamping device comprises a plate type clamp head and an adjustable fixing andconnecting device. The lower end of the plate type clamp head is connected with a shaft coupling through a rotation shaft. The shaft coupling is fixedly arranged on the inner wall of the adjustable fixing and connecting device. The left end of the adjustable fixing and connecting device is in hub connection with a fixing shaft. The plate type clamp head includes a stainless steel body, a moving clamping head and a static clamping head. A slide guide rail is arranged on the upper surface of the stainless steel body, the static clamping head is fixedly arranged on the left end of the slide guide rail, and the upper surface of the slide guide rail is in sliding connection with the moving clamping head. Through adoption of the adjustable fixing and connecting device, the entire anti-loose wire-clamping device can freely rotate 360 degrees, and has turning and fixing functions. Moreover, a control module is arranged inside the plate type clamp head to control joints to move, so the wire clamping control force is increased and over-tight or loosening situations during wire clamping can be overcame effectively.

A disc rotation type four-fracture vacuum arc extinguishing chamber is provided, wherein the vacuum arc extinguishing chamber is the disc rotation type four-fracture vacuum arc extinguishing chamber connected with an insulating shaft; one end of the insulating shaft is connected with an external driving motor or a rotating apparatus, the other end stretches into the vacuum arc extinguishing chamber and is connected with an insulating disc which is provided with conductor connection rods at both ends; movable contacts are arranged on the end faces of the conductor connection rods at both ends of the insulating disc; static contacts are arranged on the insulating outer wall; the movable contacts arranged on the end faces of the conductor connection rods at both ends of the insulating disc and corresponding static contacts respectively form two groups (four fractures); two fractures form one group and the fractures are arranged on one insulating disc in order to realize synchronous break; the fractures between groups are electrically insulated by the insulating disc; the insulating shaft drives the insulating disc and the movable contacts on the conductor connection rods to rotate, in this way, the movable contacts and the static contacts on the circumference of the insulating wall are effectively separated from each other so as to switch on and off the circuit. The invention uses the structure of four fractures in the same extinguishing chamber and the rotating movable contacts, the volume is small and the cost is low.

The invention provides a lifting test stand of a distribution line fault indicator. The test stand is composed of a lifting mechanism, an insulating connecting bracket and a test coil that are connected successively from top to bottom. The insulating connecting bracket consists of a support frame and an insulation bracket. The test stand has advantages of great convenience in operation, high safety, small occupied area, and large detection number; and the checking and testing efficiency of products at all links is improved.

The invention discloses a stacked frame electron gun of a space traveling wave tube. The stacked frame electron gun comprises a gun core, an insulating porcelain cylinder, a bunching pole, a bunchingpole sealing ring, a circular ring consisting of two pieces of semicircular corrugated porcelain, a first anode sealing ring, a corrugated porcelain ring with a hole, a second anode sealing ring, a corrugated porcelain ring, a supporting seat, a metal shell, five lead insulating porcelain columns, a first anode and a second anode. The bunching pole sealing ring, the circular ring, the first anodesealing ring, the corrugated porcelain ring with the hole, the second anode sealing ring, the corrugated porcelain ring and the supporting seat are stacked to form a supporting and insulating structure. Good structural reliability is formed while the insulation distance of each electrode electrified assembly is ensured, and the mechanical resistance is excellent.

The invention discloses a battery cell series connection module support, and a battery cell series connection module and an assembling method thereof. The battery cell series connection module supportcomprises: a module support main body, wherein one end of the module support main body is provided with first tab welding platforms, two sides of the first tab welding platforms are respectively provided with first tab welding through grooves, and a separator is arranged between the adjacent first tab welding platforms, and the other end of the module support main body is provide with a second tab welding platform which is provided with second tab welding through grooves, the two sides of the second tab welding platform are provided with lead-out tab welding platforms, one sides, far away from the second tab welding platform, of the lead-out tab welding platforms are provided with lead-out tab welding through grooves, and the height of the second tab welding platform is larger than that of these of the lead-out tab welding platforms; and a module wire pressing cover detachably covering the module support main body. The battery cell series connection module support solves the problem that the short circuit is easy to generate in the processing and later use processes due to the not enough insulation distance between a combined battery cell series connection point or the positive and negative welding points of the current hole punching module support.

The invention relates to the technical field of high voltage electric power equipment, and particularly relates to a 1100KV opening and closing super class B induced current outdoor high voltage AC grounding switch comprising a primary static contact, an auxiliary static contact, a primary grounding knife, a chassis, an auxiliary moving contact, a signal control box and an arc-extinguishing device. The primary static contact and the auxiliary static contact are arranged on a wiring board arranged at the upper end of the switch. The auxiliary moving contact is arranged at the side of the lower end of a primary moving contact. The signal control box is provided with a switch. The rotating shaft of the primary grounding knife acts to drive a trigger device so as to trigger the switch of the arc-extinguishing device. The safety performance of the grounding knife can be enhanced, and the switch has the characteristics of being simple and reasonable in structure, stable in transmission and high in reliability so that the problem of opening and closing induced current of the 1100kV high voltage AC grounding switch in wiring arrangement of double circuits on the same tower of a 1100kV frame can be effectively solved.

The invention discloses an 800kV bushing with a top ring shielding structure, which is characterized in that it includes a conductive pipe arranged in a hollow composite insulating cylinder, the top of the conductive pipe is connected to a wiring board; the hollow composite insulating cylinder is provided with a top ring for grounding The shielding case includes a main body of the shielding case. The top of the main body of the shielding case is connected to a plurality of overlapping top rings through a plurality of support rods, and the conductive pipe is passed through the top rings. The present invention adds a top ring on the top of the main body of the shielding cover, which significantly improves the problem that the inner wall and outer wall potential lines of the sleeve hollow composite insulating cylinder corresponding to the upper end of the grounding shielding cover with the top ring are too dense, optimizes and reduces the electric field strength value at this place, and the potential The whole line is moved to the upper part of the bushing to make full use of the insulation distance of the bushing and improve the overall insulation performance of the bushing. At the same time, the structure of the bushing is simple, and the manufacture and installation are convenient and fast while ensuring that the insulation performance is basically the same. , The production cost is significantly reduced.

The present invention relates to the technical field of high-voltage power equipment, in particular to an outdoor high-voltage AC grounding switch with 1100KV opening and closing of super-B class induction current, including a main static contact, an auxiliary static contact, a main grounding knife, and a chassis , auxiliary moving contact, signal control box, arc extinguishing device, the main static contact and auxiliary static contact are arranged on the wiring board at the upper end of the switch, and the auxiliary moving contact is arranged on the side of the lower end of the active contact , the signal control box is provided with a switch, and the action of the main grounding knife rotating shaft drives the trigger device to trigger the switch of the arc extinguishing device. The present invention not only improves the safety performance of the grounding knife, but also has the advantages of simple and reasonable structure, stable transmission and high reliability. It effectively solves the problem of the induced current caused by the opening and closing of the 1100kV high-voltage AC grounding switch when the 1100kV grid frame is arranged with double-circuit lines on the same tower.

The invention relates to a dry ice cleaning vehicle of electrical equipment external insulation, belonging to the cleaning equipment of the electrical equipment external insulation. A lifter (7) is fixed on a vehicle body (8); the top end of the lifter (7) is provided with a lift platform (3) on which an insulation telescopic arm (2) is arranged; the telescopic end of the insulation telescopic arm (2) is connected with an automatic dry ice particle track sprinkler head assembly (1); and a dry ice conveying insulation duct (4-1) on a dry ice conveying device (4) is communicated with a sprinkler head (1-8) on the automatic dry ice particle track sprinkler head assembly (1). The invention has the advantages of compact structure, larger inclusive area for cleaned objects, almost no cleaning dead corner, large one-step cleaning surface, high cleaning quality, convenient operation and high dirt removal efficiency, thereby being especially suitable for the cleaning work of vertically arranged cylindrical insulating equipment, such as insulators or sleeve pipes. The invention can be used as high-efficiency cleaning equipment for safe electric power production and electric power supply guarantee and has favorable social and economic benefits.